William p



(NoMode L) W. P. GIBSON.-

HYDRAULIC OR OTHER ELEVATOR. No. 378,674. Patented Feb. 28, 1888.

N PETERS. Photo-lithograph", Washington. nc,

lhnrrno Faeries Parser @rriea \VILLIAM P. GIBSON, OF LONDON, ENGLAND, ASSIGNOR TO THE AMERICAN ELEVATOR COMPANY, OF SAME PLACE.

HYDRAULlG (3R OTHER ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 378,6'7d, dated February 28,1888.

Applicationtiled September 21, 1887. Serial No. 250,332. (No model.)

T on whom it may concern: 1 It will be evident that by proportioning the Be it known that I, WILLIAM PARKER GIB- diameter of the wheels and drums any requr? SON, a citizen of the United States, residing site amount of cage-travel may be obtained for at 4 Queen Victoria Street, in the city of Lonany given piston or ram travel, and also that 5 don, England, have invented a new and usethe apparatus may be operated by high or ful Improvement in Hydraulic or other Elelow pressure hydraulic steam or other power, vators,of which the following is a specification. and this renders the invention particularly This invention relates to that class of hyuseful for what are known as dinner, or draulic or other elevators or lifts in which the light lifts, or "elevator-s, where a quick IO cage to be lifted or lowered is carried upon a cage-travel is desired.

rope or chain which is wound or unwound What I claim is-:-- from a drum or barrel, said drum or barrel 1. In an elevator or lift, the combination, being operated by hydraulic or other power. with a cylinder, its piston and piston-rod, of

In order that my invention may be fully on a pair of wheels mounted in bearings upon 15 derstood by others skilled in the art to which the piston-rod, and a removable drum, one of it appertains, reference is made to the accomthe wheels having a chain orrope connected panying drawings, in whichthereto and to a fixed point, and the other Figurelre resentsaside elevation and Fi wheel havin a chain or ro 3e connected to it v v I a b l I 2 airont elevation, partially in section. and to the revoluble drum, and connections 20 According to my invention, I propose to between the latter and a cage, whereby when mount across-head,A,upon the end of the ram the piston is moved the pair of wheels will be or piston-rod B, and'outside of the cylinder revolved to thereby revolve said drum to C, said crosshead carrying an axle, a, upon actuate the cage, substantially as described.

either end of which are keyed rope or chain 2. In an elevator or lift, the combination, 7 5 25 wheelsDand E. Around the wheelDis coiled with a cylinder, its piston and piston.-rod, of

a rope or chain, (I, one end thereof being sea p'airof wheels of different diameters mounted cured thereto and the other end being atin bearings to travel with the movement of tached to an eyebolt or other fixed point, I). the piston, a drum adapted to be rotated by Ifthe ram or piston 13 be raised, the strain on the rotation of said wheels, two independent 0 said rope (2 will cause the wheel D to be rechains or ropes, one for each of said wheels,

volved, and with it the axle a and the wheel the end of one of the said chains or ropes E attached thereto. From wheel E passes a connected to a fixed point, and the other of rope or chain, c, to a third wheel or drum, F, said chains or ropes connected to and wound which is attached to the axle f of the main upon said drum, and connections between the 5 or cage drum G. Around this drum G is latter andacagc for actuating it, substantially wound the cageropawhich is not shown, and as described.

which passes up to the top of the building In an elevator or lift, the combination,

over the usual pulley and down to the cage, with the cylinder, its piston and piston-rod,

as is well understood. of wheels I) and E, secured upon a shaft, (t, 40 Any upward movement ofthe piston or ram and mounted to turn in bearings on the pis- B will cause the rope or chain to be wound ton-rod, drum F and cage-drum G, mounted upon the drum G, and the cage accordingly to to revolve together in fixed bearings, indebe lifted, while the weight of the piston and pendent chains (2 0, one secured to the wheel connected parts is sufficient to cause them to Band to a fixed pointand adapted to be wound 5 5 descend when the pressure is removed, the on and unwound from said wheel, and the other weight of the cage when descending causing secured to the wheel E and to the drum F, and

the drum G,with thcattached aXlef and wheel adapted to be wound on and unwound from or drum F, to be revolved, thereby turning said wheel and drum, substantially as dethe wheel E, and, through axle a, the wheel scribed. I00 50 D, upon which what may be termed the driv- 4. The combination of the cylinder provided ing rope or chain cl is coiled. with abearing for ashaft, f,and drums mounted on said shaft upon opposite sides of said bearand connected with one of said drums, sub- :0 ing, the piston and its rod, a bearing for a stantially as described.

shaft, a, secured to the end of the pist0n-rod In testimony whereof Ihave hereunto set my and arranged parallel with the first-named hand in the presence of two subscribing wit- 5 bearing and shaft, wheels secured to said shaft nesses.

a, one upon opposite sides of the bearing", a WM. I. GIBSON. rope or chain wound upon one of said wheels Witnesses:

and secured to a fixed point, and asecond rope ARTHUR L. GIBSON, or chain wound upon the other of said wheels 0. CLARKE. 

